公开(公告)号：US20220337504A1

公开(公告)日：2022-10-20

申请号：US17676145

申请日：2022-02-19

Applicant: METASWITCH NETWORKS LTD.

Inventor： Alan DAVEY ,  Jonathan CUMMING

IPC: H04L45/02 ,  H04L45/12 ,  H04L47/24

Abstract: A network node has a graceful restart mode in which the node: sends a graceful restart notification to one or more neighbouring nodes; attempts to re-establish an adjacency with the neighbouring node(s); receives link state data from at least one of the neighbouring node(s), the received data being sent in response to said attempt; derives pre-restart link data from the received data, the derived data identifying formerly active links, including the node, for routing traffic before the restart; routes network traffic in accordance with routing information stored in the router; detects one or more links, of the formerly active links, which are currently inactive; continues with graceful restart after said detection; determines one or more links, of the formerly active links, which are currently active; and exits the graceful restart mode in response to successful re-establishment of adjacencies with a respective neighbouring node for each of the currently active link(s).

公开(公告)号：US20200280508A1

公开(公告)日：2020-09-03

申请号：US16803679

申请日：2020-02-27

Applicant: Metaswitch Networks Ltd.

Inventor： Alan DAVEY ,  Jonathan CUMMING

IPC: H04L12/751 ,  H04L12/721 ,  H04L12/851

Abstract: A network node has a graceful restart mode in which the node: sends a graceful restart notification to one or more neighbouring nodes; attempts to re-establish an adjacency with the neighbouring node(s); receives link state data from at least one of the neighbouring node(s), the received data being sent in response to said attempt; derives pre-restart link data from the received data, the derived data identifying formerly active links, including the node, for routing traffic before the restart; routes network traffic in accordance with routing information stored in the router; detects one or more links, of the formerly active links, which are currently inactive; continues with graceful restart after said detection; determines one or more links, of the formerly active links, which are currently active; and exits the graceful restart mode in response to successful re-establishment of adjacencies with a respective neighbouring node for each of the currently active link(s).